Type-casting mold.



PATENTBD SEPT. 4, 1906.

P. G. NUERNBERGBR & G. RETTIG. JR. TYPE CASTING MOLD.

APPLICATION FILED MAY 15, 1905.

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P. G. NUERNBERGER & G. RBTTIG, JR. TYPE CASTING MOLD.

APPLICATION TILED MAY 15 1905.

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UNITED STATES PATENT orEIoE.

PHILIP G. NUERNBERGER AND GEORGE RETTIG, JR., OF CHICAGO, ILLINOIS.

TYPE-CASTING MOLD.

Specification of Letters Patent.

Patented Sept. 4, 1906.

Application filed May 15, 1905. Serial No. 260,581.

T0 at whom it may concern.-

Be it known that we, PHILIP G. N UERN- BERGER and GEORGE RETTIG, J12, citizens of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented new and useful Improvements in Type-Casting Molds, of which the following is a specification. Y

This invention relates to improvements in molds for casting type, and has for its object to provide a mold embracing means whereby the type are cast and the jet separated therefrom in such a manner as to be discharged from the mold a finished product ready for use.

In connection with this improvement ref erence is made to a pending application, filed April 22, 1905, Serial No. 256,930.

The improvement set forth in this application relates mainly to the means employed in effecting the breaking-oil movement of the jet parts and which is diflerent from the means set forth in the application herein re ferred to.

In the drawings, Figure 1 is a front elevation showing the two mold members in their closed position. Fig. 2 isa similar viewshowing the mold partly open, the wide-openposition being indicated in dotted lines. Fig. 3 is a rear side elevation of the mold in a closed position. Fig. 1 is a view in perspective of a type and jet attached thereto. Fig. 4 is a view in perspective of a type-body, the jet being broken off. Fig. 5 is an opened-out view of the upper mold member looking at the inside. Fig. 6 is a similar view of the lower member. Fig. 7 is a transverse section of the complete mold on line 7, Fig. 5. Fig. 8 is a transverse section of the complete mold on line 8, Fig. 6. Fig. 9 is a detached view in perspective of one of the jet parts of the mold; and Fig. 10 is a sectional detail showing the relative position of the nippleplate, the nipple or spout, and the jet parts when the mold is in position to receive a charge of metal.

A may represent the lower member of the mold, and B the upper member. Generally the mold members will be of the usual construction, so that the description will be limited to the improved features and the parts effected thereby. It will be understood that the molds are used in connection with the ordinary type-casting machine in the same manner common to this class of devices except as to the new features. In the present instance the jet parts or ingate members of each mold member do not occupy a stationary position or form a rigid part of the respective upper and lower mold members, but have an independent movable automatic action in breaking off the jet or refuse bit of metal filling the ingate port or adhering to the base or foot of the type.

The jet part 10 in the lower mold member A is rigidly mounted on a lever or bar 11, and the jet part 12in the upper mold member is rigidly mounted 011 a companion lever 13, as shown in Figs. 5 and 6. The pivot end of lever 11 is secured to the bottom mold-plate 14 by a pivot-screw 15, inserted through a hole 16. (Shown in Fig. 9.) The opposite free end of this lever is provided with a slot aperture 17, elongated transversely. A retaining-screw 18 is inserted through this slot and rigidly secured in the mold-plate 14:. By this arrangement the free end of lever 11 and the jet part 10 carried thereby are capable of a slight lateral movement in the are of a circle and within the limit fixed by the slot 17.

One end of a spring 19 is secured to the mold-plate 14 by a screw 20. The opposite free end of this spring bears against the adj acent free end of lever 1 1 and normally holds the same and the jet part mounted thereon in the outermost position. (Shown in Figs. 6, 7, and. 8.) In this normal position the jet part 10 stands away from the mohl-carriage part 21. and is separated therefrom by a space 22, as best shown in Figs. 7 and 8.

The pivot end of lever 13, carrying the jet part 12, Fig. 5, is secured to the top moldplate 23 of mold member B by a pivot-screw 24. The opposite free end of this lever is provided with a slot (not shown) corresponding to slot 17 in the companion lever 11 and through which is inserted a retaining-screw 25, and thus provides for the slight lateral movement described in connection with the jet part 10 and its lever 11. One end of a spring 26 is secured to the top mold-plate by a pivot-screw 27, the opposite free end bear- .ing against the adjacent free end of lever 13 and holds the same in its outer normal position and leaving a space 28 between the jet part 12 and the mold-carriage part 29.

passage and mold to equalize 1 the in-eXtending edges The companion upper and lower jet parts are each provided on their inner adjacent edges with an overhanging lip or flange 30, as best shown in Figs. 7, 8, and 9. Each of the carriage parts 21 and 29 has a plate 31 rigidly secured to the inner edges thereof. The adjacent edges of these plates 31 project past the walls to which they are secured and form a shoulder or dam 32. When the jet parts are moved inward to their abnormal position, the overhanging flanges 30 extend over the edges of the shoulders 32 and project just far enough into the mold or type chamber 33 to core out a groove or depression 34, Figs. 4 and 4 in the base or foot of the type-body 35. The respective inner edges or vertical walls of the body parts 36 and 37 of the upper and lower mold members are provided with a groove 38, Figs. 7 and 8, into which the edges of the overhanging flanges enter when the jet parts are moved inward to their abnormal or casting position, and thus permit of the flanges projecting into the moldchamber to have the coring-out action in locating the casting and breaking off junction of the jet 39 with the type in the bottom of the groove away from the base or foot of the type and leaving a perfectly level finished end to stand on when discharged from the mold.

The lower jet part, Fig. 9, is provided in the ingate-port 40 with a recess 41, into which a bit of metal from each injection will flow and form a retaining-tongue 42 on the jet and hold the same in place until broken away from the type by the outward movement of the jet parts.

It will be noted that the free ends of companion levers 11 and 13, carrying the jet parts, are located at opposite ends of the the movement of these parts and insure the jet parts being brought up squarely against the mold-carriage when forced inward by contact with the nippleplate.

When the charge of metal is injected into the mold, it flows in between the overhanging flanges or lips on the jet parts and back against the shoulders 32, formed by the overlapping edges of plates 31. In this way of the flanges 30 on the jet parts form the groove or depression in the base of the type and the shoulders 32 the finished level base or foot a, on which the type stands.

As before stated, the normal or open position of the jet parts mounted on levers 11 and 13 is away from the carriage parts. In practical working when the mold moves up to receive a charge of metal through the nip ple or spout 43, Fig. 10, the slightly-project ing jet parts will come in contact with the face of the nipple-plate 44 and be closed inward against the pressure of their respective springs to the casting position before the charge of metal enters.

12 constitute a gate forced As the mold moves away and the pressure of the nipple-plate is relaxed the jet parts are forced outward by the action of the springs and the jet broken off before the mold opens, the jet and type being then discharged from the mold in the usual manner.

The two complementary jet parts 10 and inward against the resistance of their springs 19 and 26 by the metal-supplying device against which the mold moves at or just prior to the time of casting and automatically forced outward by said springs to break the jet at the time of withdrawal. The movement of said jet parts both ways is in parallel planes and is pivotal by reason of the pivoting of their levers 11 and 13 at 15 and 24. The screws 18 and 25 act as stops limiting such motion. This motion is more effective than a straight pull in breaking the jet when the springs force out the free ends of the levers, and so move the gate away from the mold-cavity. The said jet parts constituting said gate retain throughout the same relative positions and distance, being arranged to be moved equally in the manner described toward and from the mold without their planes of motion approaching or receding from each other. The jet-forming recess formed between them communicates with the moldcavity when the gate and mold are in contact for casting; but neither part of the gate is a part of the mold or connected in any Way to the metal-supplying device.

Having thus described our invention, what we claim is 1. A type-casting mold provided with a gate, consisting of two complementary jet parts, having a jet-forming recess communicating with the mold-cavity, each of said jet parts being mounted for pivotal motion toward and from said cavity.

2. A type-casting mold, provided with a gate, consisting of two complementary jet parts, having a jet-forming recess communicating with the mold-cavity, each of the said jet parts being mounted for pivotal motion and operating substantially as set forth.

3. In combination with the mold members of a type-casting mold, a pair of jet parts correspondingly and pivotally arranged on said members, in combination with means for automatically turning the said parts outwardly on their pivots and thereby breaking the jet substantially as set forth.

4. In combination with the mold members of a type-casting mold, an inwardly and outwardly movable gate consisting of complementary parts pivotally arranged and moving in parallel planes, in combination with springs for automatically turning the said parts outwardly on their pivots to break the jet and with means for limiting the pivotal movement substantially as set forth.

ITS

5. In a type-casting mold, movable jet sition and means for returning the same to 10 parts, the companion movement-levers on their closed casting position.

which the same are mounted, said levers be- In testimony whereof we aflix our signaing pivoted in place at one end, the opposite tures in presence of two subscribingwitnesses. 5 ends having a limited free movement. PHILIP G. N UERNBERGER.

6. In a type-casting mold, movable jet GEORGE RETTIG, JR. parts, the companion levers on which the Witnesses: same are mounted, means for moving said L. B. COUPLAND,

levers and jet parts to their normal open po- G. E. CHURCH. 

